Vascular Plants of North Carolina
Account for Forked Bluecurls - Trichostema dichotomum   L.
Members of Trichostema with account distribution info or public map:
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Section 6 » Order Lamiales » Family Lamiaceae
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AuthorL.
DistributionEssentially statewide, though possibly absent from a few eastern Coastal Plain counties, though it is present on the Outer Banks.

This is an Eastern species, ranging from eastern Canada south to the Gulf Coast.
AbundanceCommon across the Piedmont and the western, central, and southern Coastal Plain, including the Sandhills. Frequent to common in the mountains. Fairly common along coastal islands, but scarce in the northeastern counties inward from the coast. Why the NCNHP has its State Rank at S4 is a complete mystery, considering that it has been recorded from at least 88 counties and is practically common statewide.
HabitatThis is a species of dry to somewhat dry openings and edges. It occurs along wooded borders, old fields, powerline clearings, meadows, edges of outcrops, and various other often grassy places, include dunes.
PhenologyBlooms from August to frost, and fruits soon after flowering.
IdentificationThis is a much -branched herb of medium height, growing to about 1.5' tall. It has numerous opposite leaves that are generally elliptical to lanceolate, about 2" long and about 3/4" wide, the base tapering to a point, and generally entire margins. From the axils of the leaves on the branches (which tend to be stiff and ascending) grow a single medium-sized flower, violet-blue with some white. The four upper lobes curl upland, and the very long bottom lobe is strongly curved downward like a tongue, with the tip violet-blue but the basal part white with violet spots. The 4 stamens are very long and curl downward just below the upper lip, to produce a flower like a dragon's-mouth. This is certainly a favored wildflower in the very late summer and fall seasons owing to the deep blue flowers with an odd "architecture"! Thankfully, it is often seen at that time of year.
Taxonomic CommentsNone, though it is likely that the undescribed species was included within it when RAB (1968) was published, though there was no mention of this odd taxon in the reference.

Other Common Name(s)Common Bluecurls, Blue-curls (not sufficient, as there are several species)
State RankS4 [S5]
Global RankG5
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